Keyboard



FIG. 1 is a front perspective view of a keyboard showing our new design;

FIG. 2 is a top plan view of the keyboard;

FIG. 3 is a front elevational view of the keyboard;

FIG. 4 is a bottom plan view of the keyboard;

FIG. 5 is a rear elevational view of the keyboard;

FIG. 6 is a left side elevational view of the keyboard; and,

FIG. 7 is a right side elevational view of the keyboard. 

The ornamental design for a keyboard, as shown and described. 